将xml数据绑定到listview中的下拉列表 [英] Bind xml data to dropdownlist which is in listview
本文介绍了将xml数据绑定到listview中的下拉列表的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
对于绑定到下拉列表的第一行Xml数据，当我将另一行添加到列表视图时.xml数据在fisrt行中被清除，并且从第二行开始没有数据显示。
protected void BindDataToGridviewDropdownlist（）
{
DataSet dsDept = new DataSet
dsDept.ReadXml（Server.MapPath（XMLFile2.xml））;
foreach（listview1.Items中的var list）
{
if（list.ItemType == ListViewItemType.DataItem）
{
DropDownList ddf =（DropDownList）list.FindControl（ddldatatype）;
ddf.DataSource = dsDept;
ddf.DataTextField =value;
ddf.DataBind（）;
}
}
Plz建议我这个代码有什么问题
For first row Xml data in binding to the dropdownlist ,when i add the another row to the list view .xml data is cleared in fisrt row and no data showing from second row onwards.
protected void BindDataToGridviewDropdownlist()
{
DataSet dsDept = new DataSet
dsDept.ReadXml(Server.MapPath("XMLFile2.xml"));
foreach (var list in listview1.Items)
{
if (list.ItemType == ListViewItemType.DataItem)
{
DropDownList ddf = (DropDownList)list.FindControl("ddldatatype");
ddf.DataSource = dsDept;
ddf.DataTextField = "value";
ddf.DataBind();
}
}
Plz suggest me what is the problem with this code
<asp:ListView ID="listview1" runat="server">
<LayoutTemplate>
<table border="0px" cellpadding="1">
<tr style="background-color: #E5E5FE">
<th>
Order
</th>
<th>
Column Title
</th>
<th>
DataType
</th>
<th>
Exapmles
</th>
<th>
Options
</th>
<th>
Delete
</th>
</tr>
<tr id="itemplaceholder" runat="server">
</tr>
</table>
</LayoutTemplate>
<ItemTemplate>
<tr>
<td>
<asp:Label ID="txtorder" Text='<%#Eval("Order") %>' runat="server"></asp:Label>
</td>
<td>
<asp:TextBox ID="txtcolumnname" Text='<%#Eval("Columnname") %>' runat="server" Width="150"></asp:TextBox>
</td>
<td>
<asp:DropDownList ID="ddldatatype" runat="server" Width="160" >
</asp:DropDownList>
</td>
<td>
<asp:DropDownList ID="ddlexamples" runat="server" Width="160">
<asp:ListItem Text="test" Value="2"></asp:ListItem>
</asp:DropDownList>
</td>
<td>
<asp:TextBox ID="txtoptions" Text='<%#Eval("Options") %>' runat="server" Width="150" ></asp:TextBox>
</td>
<td>
<asp:CheckBox ID="chkdel" runat="server" />
</td>
</tr>
</ItemTemplate>
<AlternatingItemTemplate>
<tr style="background-color: #EFEFEF">
<td>
<asp:Label ID="txtorder" Text='<%#Eval("Order") %>' runat="server"></asp:Label>
</td>
<td>
<asp:TextBox ID="txtcolumnname" Text='<%#Eval("Columnname") %>' runat="server" Width="150"></asp:TextBox>
</td>
<td>
<asp:DropDownList ID="ddldatatype" runat="server" Width="160" >
</asp:DropDownList>
</td>
<td>
<asp:DropDownList ID="ddlexamples" runat="server" Width="160">
<asp:ListItem Text="test" Value="2"></asp:ListItem>
</asp:DropDownList>
</td>
<td>
<asp:TextBox ID="txtoptions" Text='<%#Eval("Options") %>' runat="server" Width="150"></asp:TextBox>
</td>
<td>
<asp:CheckBox ID="chkdel" runat="server" />
</td>
</tr>
XMl
XMl
<DataTypes>
<DataType value="Name">
<DataItems>
<MaleName>MaleName(John)</MaleName>
<FemaleName>FemaleName(Shermilla)</FemaleName>
<AnyGender>AnyGender</AnyGender>
</DataItems>
</DataType>
<DataType value="Email">
<DataItem>
<Not>Does not exists</Not>
</DataItem>
</DataType>
<DataType value="Phone">
<DataItem>
<A>India</A>
<B>Canada</B>
<C>Australia</C>
</DataItem>
</DataType>
<DataType value="Date">
<DataItems>
<Hh>Date Format</Hh>
</DataItems>
</DataType>
<DataType value="Company">
<DataItem>
<Aa>Does not exists</Aa>
</DataItem>
</DataType>
<DataType value="City">
<DataItem>
<Bb>No examples available</Bb>
</DataItem>
</DataType>
<DataType value="Postal">
<DataItem>
<Cc>No examples availabe</Cc>
</DataItem>
</DataType>
<DataType value="Country">
<DataItem>
<Gg>No examples available.</Gg>
</DataItem>
</DataType>
<DataType value="Latitude/Longitude">
<DataItem>
<Ff>
No examples available.
</Ff>
</DataItem>
</DataType>
<DataType value="Street Address">
<DataItem>
<Ee> No examples available.</Ee>
</DataItem>
</DataType>
<DataType value="Region">
<DataItem>
<Dd>No examples available.</Dd>
</DataItem>
</DataType>
<DataType value="Fixed Number of Words"></DataType>
<DataType value="Random Number of Words"></DataType>
<DataType value="Alpha Numeric"></DataType>
<DataType value="Auto Increment"></DataType>
<DataType value="Number Range"></DataType>
<DataType value="GUID"></DataType>
<DataType value="Currency"></DataType>
<DataType value="Constant"></DataType>
<DataType value="Composite"></DataType>
<DataType value="Custom List"></DataType>
</DataTypes>推荐答案
The issue is that your list view does not contain any data. For that you will have to first bind the ListView ’listview1’ then bind the drop down. I have created a sample code for the same as mentioned below :
ASPX Code:
The issue is that your list view does not contain any data. For that you will have to first bind the ListView 'listview1' then bind the drop down. I have created a sample code for the same as mentioned below :
ASPX Code:
<asp:ListView ID="listview1" runat="server">
<LayoutTemplate>
<table border="0px" cellpadding="1">
<tr style="background-color: #E5E5FE">
<th>Order
</th>
<th>ColumnTitle
</th>
<th>DataType
</th>
</tr>
<tr id="itemplaceholder" runat="server">
</tr>
</table>
</LayoutTemplate>
<ItemTemplate>
<tr>
<td>
<asp:Label ID="txtorder" Text='<%#Eval("OrderNo") %>' runat="server"></asp:Label>
</td>
<td>
<asp:TextBox ID="txtcolumnname" Text='<%#Eval("ColumnTitle") %>' runat="server" Width="150"></asp:TextBox>
</td>
<td>
<asp:DropDownList ID="ddldatatype" runat="server" Width="160">
</asp:DropDownList>
</td>
</tr>
</ItemTemplate>
<AlternatingItemTemplate>
<tr style="background-color: #EFEFEF">
<td>
<asp:Label ID="txtorder" Text='<%#Eval("OrderNo") %>' runat="server"></asp:Label>
</td>
<td>
<asp:TextBox ID="txtcolumnname" Text='<%#Eval("ColumnTitle") %>' runat="server" Width="150"></asp:TextBox>
</td>
<td>
<asp:DropDownList ID="ddldatatype" runat="server" Width="160">
</asp:DropDownList>
</td>
</tr>
</AlternatingItemTemplate>
</asp:ListView>
ASPX.cs Code
ASPX.cs Code
public partial class XmlBinding : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
var orderList = new List<order>();
for (int i = 0; i < 10; i++)
{
orderList.Add(
new Order()
{
OrderNo = i,
ColumnTitle = "Title_" + i
}
);
}
this.listview1.DataSource = orderList;
this.listview1.DataBind();
this.BindDataToGridviewDropdownlist();
}
protected void BindDataToGridviewDropdownlist()
{
DataSet dsDept = new DataSet();
dsDept.ReadXml(Server.MapPath("XMLFile2.xml"));
foreach (var list in listview1.Items)
{
if (list.ItemType == ListViewItemType.DataItem)
{
DropDownList ddf = (DropDownList)list.FindControl("ddldatatype");
ddf.DataSource = dsDept;
ddf.DataTextField = "value";
ddf.DataBind();
}
}
}
}
public class Order
{
public int OrderNo { get; set; }
public string ColumnTitle { get; set; }
}
}
这篇关于将xml数据绑定到listview中的下拉列表的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
查看全文
